Stanfield's 2 Layer Merino Wool blend long johns provides overall warmth, comfort and long wearing durability. The inner layer is a blend of cotton and polyester for absorbency and softness next to the skin. The outer layer is a blend of merino wool and polyester which offers you warmth and strength Fly opening Signature Stanfield's elastic waistband Fully roomy seat for comfort Imported Merino wool,Cotton,Polyester Machine washable and dryable | Stanfield's Men's Two Layer Wool Thermal Long Johns Underwear, Grey, XXL Stanfield's Men's Two Layer Wool Thermal Long Johns Underwear